feat: add Notifications full page with sidebar filter

apps/admin/src/App.tsx

@@ -25,6 +25,7 @@ import RolesPage from './pages/Roles';
 import PermissionsPage from './pages/Permissions';
 import AttendancePage from './pages/Attendance';
 import TeacherWorkspacePage from './pages/TeacherWorkspace';
+import NotificationsPage from './pages/Notifications';
 import PermissionRoute from './components/PermissionRoute';
 
 const PrivateRoute: React.FC<{ children: React.ReactNode }> = ({ children }) => {
@@ -230,6 +231,14 @@ const App: React.FC = () => {
                   </PermissionRoute>
                 }
               />
+
+              <Route path="/notifications" element={
+                <PrivateRoute>
+                  <MainLayout />
+                </PrivateRoute>
+              }>
+                <Route index element={<NotificationsPage />} />
+              </Route>
             </Route>
           </Routes>
         </BrowserRouter>